Linear rail assembly of numerical control machine tool
By designing a folding cover and limiting components for the linear guide assembly of CNC machine tools, the problem of insufficient cleaning of CNC machine tool linear guides was solved, enabling the cleaning and maintenance of the guides and improving the operating efficiency and durability of the machine tools.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGXI DAQUN INTELLIGENT EQUIP CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-05-19
AI Technical Summary
The lack of effective cleaning components in existing high-precision linear guides for CNC machine tools leads to the accumulation of debris, which affects the cleanliness and smoothness of the guide surface, increases frictional resistance, reduces machining accuracy and efficiency, and shortens service life.
A CNC machine tool linear guide assembly was designed, comprising a base, a folding cover, and a limiting component. The folding cover covers the track, and the limiting component simplifies disassembly and assembly, enabling quick replacement and cleaning of the slider box. The base is equipped with a ramp for discharging waste chips.
Keeping the tracks clean reduces frictional resistance, improves machine tool operating efficiency, extends service life, lowers failure rate, and simplifies maintenance and cleaning processes.
Smart Images

Figure CN224254735U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of CNC machine tools, and in particular to a CNC machine tool linear guide assembly. Background Technology
[0002] In the wide range of CNC machine tool manufacturing and applications, high-precision linear guides play a crucial role as a core component to ensure the accuracy and stability of machine tool operation. However, existing high-precision linear guides for CNC machine tools generally have a significant drawback: the lack of effective cleaning component design.
[0003] During CNC machine tool processing, metal cutting, grinding and other operations generate a large number of tiny chips. These chips easily adhere to and accumulate on the surface of the slide rail when the machine tool is running at high speed and the slide rail moves frequently along the slide rail. As the guide surface for the slide rail, the cleanliness and smoothness of its surface are crucial for maintaining low friction and high precision motion. However, the design of existing high-precision linear guides often ignores this cleaning requirement and does not integrate or reserve installation positions for cleaning components.
[0004] Due to the lack of cleaning components, debris on the slide rail surface cannot be removed in a timely and effective manner. Over time, the accumulation of debris will cause the slide rail surface to become rough and uneven, resulting in greater frictional resistance between the slider and the slide rail. This increased friction will not only reduce the machining accuracy and efficiency of the machine tool, but also accelerate the wear of the slide rail and slider, shortening their service life. In extreme cases, it may even lead to machine tool failure and downtime, seriously affecting production progress and product quality.
[0005] Therefore, it is necessary to provide a new CNC machine tool linear guide assembly to solve the above-mentioned technical problems. Utility Model Content
[0006] To solve the above-mentioned technical problems, this utility model provides a linear guide assembly for CNC machine tools.
[0007] The CNC machine tool linear guide assembly provided by this utility model includes: a base, a folding cover, and a limiting component. The top of the base is symmetrically and fixedly connected to a rail, and a slider box is slidably connected to the rail. Both ends of the two rails are provided with threaded holes, and movable seats are symmetrically and slidably connected to the rails. A folding cover is fixedly connected to one side of each of the two movable seats. Fixed seats are inserted into both ends of the two rails. One end of the folding cover is fixedly connected to one side of the fixed seat. A limiting component for fixing to the slider box is installed inside the movable seat.
[0008] Preferably, the limiting component includes: a slot, a groove, a plug, a block, and a spring. Slots are symmetrically opened on both sides of the slider box, and grooves are symmetrically opened on the inner wall of the slot. A plug is fixedly connected to one side of the moving seat, and blocks are symmetrically slidably connected to the inner wall of the moving seat. A spring is fixedly connected between the two blocks, and one end of each block extends out of the plug and engages with the groove.
[0009] Preferably, the base has ramps at both ends near the track for discharging waste.
[0010] Preferably, both of the card blocks have rounded corners at one end of the plug.
[0011] Preferably, the folding cover is made of stretchable plastic.
[0012] Preferably, the center of the fixing seat is threaded with a bolt, and the bolt is threadedly connected to the threaded hole.
[0013] Preferably, the slider box contains rolling elements.
[0014] Compared with related technologies, the CNC machine tool linear guide assembly provided by this utility model has the following beneficial effects:
[0015] Effective protection of the track and sliding box:
[0016] The folding cover design cleverly covers the track, effectively preventing debris, dust and other foreign matter from falling onto the track, thereby reducing the impact of these foreign objects on the normal operation of the sliding box; this not only keeps the track clean, but also ensures the smooth sliding of the sliding box on the track, improving the overall operating efficiency of the machine tool;
[0017] Simplify the inspection and cleaning process:
[0018] Whether it's overhauling the sliding box or cleaning the folding cover, the quick disassembly and assembly features of the limit components make the process exceptionally simple; operators can quickly access the interior of the sliding box or folding cover to perform necessary inspections and cleaning, thereby ensuring the long-term stable operation of the machine tool.
[0019] Improve the durability and reliability of machine tools:
[0020] By keeping the tracks clean and the sliding boxes running smoothly, the service life of the machine tool is effectively extended. At the same time, the design of the folding cover and limit components also improves the overall durability and reliability of the machine tool, reducing the failure rate caused by foreign objects or improper maintenance. Attached Figure Description
[0021] Figure 1 This is a schematic diagram of the structure of the CNC machine tool linear guide assembly provided by this utility model;
[0022] Figure 2for Figure 1 The diagram shows the structure of the base.
[0023] Figure 3 for Figure 1 The diagram shows a partial cross-sectional view of the slider box.
[0024] Figure 4 for Figure 1 The diagram shows the internal structure of the movable seat.
[0025] The following are the labels in the diagram: 1. Base; 2. Rail; 3. Slider box; 4. Threaded hole; 5. Folding cover; 6. Moving seat; 7. Fixed seat; 8. Bolt; 9. Ramp; 21. Slot; 22. Card slot; 23. Plug; 24. Card block; 25. Spring. Detailed Implementation
[0026] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0027] The specific implementation of this utility model will be described in detail below with reference to specific embodiments.
[0028] Please see Figure 1-4 A CNC machine tool linear guide assembly includes: a base 1, a folding cover 5, and a limiting component. The top of the base 1 is symmetrically and fixedly connected to a rail 2. A slider box 3 is slidably connected to the rail 2. Threaded holes 4 are provided at both ends of the two rails 2. Moving seats 6 are symmetrically and slidably connected to the rails 2. A folding cover 5 is fixedly connected to one side of each of the two moving seats 6. A fixed seat 7 is inserted into both ends of the two rails 2. One end of the folding cover 5 is fixedly connected to one side of the fixed seat 7. A limiting component for fixing to the slider box 3 is installed inside the moving seat 6. Slopes 9 for discharging waste chips are provided at both ends of the base 1 near the rails 2. The folding cover 5 is made of retractable plastic. A bolt 8 is threadedly connected to the middle of the fixed seat 7, and the bolt 8 is threadedly connected to the threaded hole 4. A rolling element is installed inside the slider box 3.
[0029] It should be noted that: the base 1 serves as a support structure, with two rails 2 symmetrically fixedly connected to its top; the slider box 3 is slidably connected to the rails 2 and is used to support and move other parts of the machine tool; the folding cover 5 is slidably connected to the rails 2 via the movable seat 6 and can be unfolded when needed to protect the slide rails and slider box 3.
[0030] Please see Figure 3-4The limiting components include: slot 21, slot 22, plug 23, block 24 and spring 25. Slot 21 is symmetrically opened on both sides of the slider box 3. Slot 22 is symmetrically opened on the inner wall of the slot 21. Plug 23 is fixedly connected to one side of the moving seat 6. Block 24 is symmetrically slidably connected to the inner wall of the moving seat 6. Spring 25 is fixedly connected between the two blocks 24. One end of each block 24 extends out of the plug 23 and engages with the slot 22. Rounded corners are opened at the end of each block 24 located at the plug 23.
[0031] It should be noted that: by manually pushing the locking block 24 to disengage it from the slot 22, the slider box 3 can be easily removed from or installed on the track 2; since one end of the locking block 24 has a rounded corner, it can be easily disassembled and installed by pushing it with your fingers even without the aid of tools.
[0032] The working principle of the CNC machine tool linear guide assembly provided by this utility model is as follows:
[0033] I. Overall Structure
[0034] The CNC machine tool linear guide assembly mainly consists of a base 1, a rail 2, a slider box 3, a folding cover 5, a limiting component, and a fixed seat 7. The base 1 serves as a support structure, with two rails 2 symmetrically fixedly connected to its top. The slider box 3 is slidably connected to the rail 2 and is used to support and move other parts of the machine tool. The folding cover 5 is slidably connected to the rail 2 via a movable seat 6 and can be unfolded when needed to protect the rails and the slider box 3.
[0035] II. Detailed Working Principle
[0036] Structural composition
[0037] The limiting assembly includes a slot 21, a groove 22, a plug 23, a locking block 24, and a spring 25. The slot 21 is symmetrically located on both sides of the slider box 3 and is used to cooperate with the plug 23 to achieve initial positioning. The groove 22 is located on the inner wall of the slot 21 and is used to engage with the locking block 24 to achieve a firm fixation. The plug 23 is fixedly connected to one side of the movable base 6. When the slider box 3 moves to the position that needs to be fixed, the plug 23 will be inserted into the slot 21. The locking block 24 is slidably connected inside the plug 23 by the force of the spring 25, with one end extending out of the plug 23 and engaging with the groove 22, thereby fixing the slider box 3.
[0038] Quick disassembly and assembly
[0039] When it is necessary to disassemble or assemble the slider box 3, simply push the locking block 24 manually to disengage it from the slot 22, and then the slider box 3 can be easily removed from or installed on the track 2. Since one end of the locking block 24 has a rounded corner, it can be easily disassembled or assembled by pushing it with your fingers even without the aid of tools. This design greatly simplifies the disassembly and assembly process of the slider box 3 and improves maintenance efficiency.
[0040] Stable and fixed
[0041] After the slider box 3 is fixed, the locking block 24 is tightly locked in the slot 22 under the action of the spring 25, thereby ensuring the stable fixation of the slider box 3 on the track 2. This design not only improves the accuracy and stability of the machine tool during the processing, but also avoids noise and wear caused by the shaking of the slider box 3.
[0042] III. Cleanup Function
[0043] The design of the folding cover 5 not only protects the slide rail and slider box 3 from interference from the external environment, but also cleans the surface of the slide rail during the movement of the slider box 3. When the slider box 3 slides on the track 2, the bottom of the folding cover 5 will contact and rub against the surface of the slide rail, thereby removing the debris attached to the surface of the slide rail. This design realizes automatic cleaning of the surface of the slide rail, effectively reduces frictional resistance, and extends the service life of the slide rail and slider.
[0044] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A linear guide assembly for a CNC machine tool, characterized in that, include: The base (1) has a track (2) symmetrically fixedly connected to the top of the base (1), and a slider box (3) is slidably connected on the track (2). Threaded holes (4) are opened at both ends of the two tracks (2). Folding cover (5), movable seats (6) are symmetrically slidably connected on the track (2), and folding cover (5) is fixedly connected to one side of each of the two movable seats (6). Fixed seats (7) are inserted into both ends of the two tracks (2), and one end of the folding cover (5) is fixedly connected to one side of the fixed seat (7). The limiting component, the movable seat (6) is equipped with a limiting component for fixing with the slider box (3).
2. The CNC machine tool linear guide assembly according to claim 1, characterized in that, The limiting components include: slot (21), slot (22), plug (23), block (24) and spring (25). Slots (21) are symmetrically opened on both sides of the slider box (3). Slots (22) are symmetrically opened on the inner wall of the slot (21). A plug (23) is fixedly connected to one side of the moving seat (6). Blocks (24) are symmetrically slidably connected to the inner wall of the moving seat (6). A spring (25) is fixedly connected between the two blocks (24). One end of each block (24) extends out of the plug (23) and engages with the slot (22).
3. The CNC machine tool linear guide assembly according to claim 1, characterized in that, Both ends of the base (1) near the track (2) are provided with ramps (9) for discharging waste.
4. The CNC machine tool linear guide assembly according to claim 2, characterized in that, Both of the aforementioned card blocks (24) have rounded corners at one end of the plug (23).
5. The CNC machine tool linear guide assembly according to claim 1, characterized in that, The folding cover (5) is made of stretchable plastic.
6. The CNC machine tool linear guide assembly according to claim 1, characterized in that, The middle of the fixed seat (7) is threaded with a bolt (8), and the bolt (8) is threadedly connected to the threaded hole (4).
7. The CNC machine tool linear guide assembly according to claim 1, characterized in that, The slider box (3) has rolling elements installed inside.